Fig. 9. Plots of D-values derived by applying the rotation method to scaling of neonatal body mass for primate species (data from Smith and Leigh, 1998). Rotation of the data in rads is indicated on the abscissa. (A) For the entire sample (N=109), a global minimum (thick vertical line) is located at 0.742 rads, corresponding to =0.916. However, an additional local minimum value (thin vertical line) is located at 0.558 rads, corresponding to =0.624. (B) For strepsirrhine primates taken alone (N=28), the curve is somewhat irregular because of the small sample size, but there is a global minimum located at 0.603 rads, corresponding to =0.688. (C) For haplorhine primates taken alone (N=81), the sample size is considerably larger and there is a clear single global minimum located at 0.711 rads, corresponding to =0.862.